package com.lovemio.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {
    //成功
    public String paymentInfo_OK(Integer id){
        return "线程池:"+Thread.currentThread().getName()+" paymentInfo_OK,id:"+id+"\t"+"哈哈哈";
    }
    //三秒内正常，超过三秒则执行fallbackMethod方法兜底.异常或超时都会走降级
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "3000")
    })
    public String paymentInfo_TimeOut(Integer id){
        //int age = 10/0;
        int timeNumber = 3;
        try{
            TimeUnit.SECONDS.sleep(timeNumber);
        }catch (Exception e){
            e.printStackTrace();
        }
        return "线程池："+Thread.currentThread().getName()+" paymentInfo_TimeOut,id:"+id+"\t"+"呜呜呜耗时（秒）"+timeNumber;
    }

    public String paymentInfo_TimeOutHandler(Integer id) {
        return "线程池："+Thread.currentThread().getName()+" 系统繁忙或运行报错，请稍后再试！,id:"+id+"\t"+"o(╥﹏╥)o";
    }

    //==========服务熔断测试
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),//是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),//请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),//时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),//失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if (id<0){
            throw new RuntimeException("********id 不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName()+"\t"+"调用成功，流水号："+serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id 不能为负数，请稍后再试，o(╥﹏╥)o   id："+id;
    }

}
